diff --git a/api/src/Sozsoft.Platform.Application.Contracts/Messenger/MessengerDtos.cs b/api/src/Sozsoft.Platform.Application.Contracts/Messenger/MessengerDtos.cs
index 972ddeb..e5e4471 100644
--- a/api/src/Sozsoft.Platform.Application.Contracts/Messenger/MessengerDtos.cs
+++ b/api/src/Sozsoft.Platform.Application.Contracts/Messenger/MessengerDtos.cs
@@ -18,6 +18,7 @@ public class MessengerContactDto
     public string FullName { get; set; } = string.Empty;
     public string? Email { get; set; }
     public bool IsActive { get; set; }
+    public bool IsOnline { get; set; }
 }
 
 public class MessengerAttachmentDto
diff --git a/api/src/Sozsoft.Platform.Application.Contracts/OrgChart/OrgChartDto.cs b/api/src/Sozsoft.Platform.Application.Contracts/OrgChart/OrgChartDto.cs
index 13efa91..a11f385 100644
--- a/api/src/Sozsoft.Platform.Application.Contracts/OrgChart/OrgChartDto.cs
+++ b/api/src/Sozsoft.Platform.Application.Contracts/OrgChart/OrgChartDto.cs
@@ -9,6 +9,7 @@ public class OrgChartUserDto
     public string FullName { get; set; }
     public string Email { get; set; }
     public string UserName { get; set; }
+    public string PhoneNumber { get; set; }
 }
 
 public class OrgChartNodeDto
@@ -21,5 +22,8 @@ public class OrgChartNodeDto
     public Guid? DepartmentId { get; set; }
     public string DepartmentName { get; set; }
 
+    public Guid? JobPositionId { get; set; }
+    public string JobPositionName { get; set; }
+
     public List<OrgChartUserDto> Users { get; set; } = [];
 }
diff --git a/api/src/Sozsoft.Platform.Application/Messenger/MessengerAppService.cs b/api/src/Sozsoft.Platform.Application/Messenger/MessengerAppService.cs
index 73f4761..79ef625 100644
--- a/api/src/Sozsoft.Platform.Application/Messenger/MessengerAppService.cs
+++ b/api/src/Sozsoft.Platform.Application/Messenger/MessengerAppService.cs
@@ -26,6 +26,7 @@ public class MessengerAppService : ApplicationService
     private readonly IRepository<IdentityUser, Guid> _userRepository;
     private readonly IRepository<MessengerConversation, Guid> _conversationRepository;
     private readonly IRepository<MessengerConversationMessage, Guid> _messageRepository;
+    private readonly IIdentitySessionRepository _identitySessionRepository;
     private readonly BlobManager _blobManager;
     private readonly IConfiguration _configuration;
 
@@ -33,12 +34,14 @@ public class MessengerAppService : ApplicationService
         IRepository<IdentityUser, Guid> userRepository,
         IRepository<MessengerConversation, Guid> conversationRepository,
         IRepository<MessengerConversationMessage, Guid> messageRepository,
+        IIdentitySessionRepository identitySessionRepository,
         BlobManager blobManager,
         IConfiguration configuration)
     {
         _userRepository = userRepository;
         _conversationRepository = conversationRepository;
         _messageRepository = messageRepository;
+        _identitySessionRepository = identitySessionRepository;
         _blobManager = blobManager;
         _configuration = configuration;
     }
@@ -71,6 +74,8 @@ public class MessengerAppService : ApplicationService
                 .Take(100)
         );
 
+        var onlineUserIds = await GetOnlineUserIdsAsync(users.Select(user => user.Id));
+
         return users.Select(user =>
         {
             var fullName = $"{user.Name} {user.Surname}".Trim();
@@ -83,7 +88,8 @@ public class MessengerAppService : ApplicationService
                 Surname = user.Surname,
                 FullName = fullName.IsNullOrWhiteSpace() ? user.UserName : fullName,
                 Email = user.Email,
-                IsActive = user.IsActive
+                IsActive = user.IsActive,
+                IsOnline = onlineUserIds.Contains(user.Id)
             };
         }).ToList();
     }
@@ -238,6 +244,12 @@ public class MessengerAppService : ApplicationService
             throw new UserFriendlyException("Bu tenant icinde gecersiz alici var.");
         }
 
+        var onlineRecipientIds = await GetOnlineUserIdsAsync(recipientIds);
+        if (onlineRecipientIds.Count != recipientIds.Count)
+        {
+            throw new UserFriendlyException("Sadece online kullanicilara mesaj gonderebilirsiniz.");
+        }
+
         MessengerConversation? conversation = null;
         if (input.ConversationId.HasValue)
         {
@@ -406,6 +418,25 @@ public class MessengerAppService : ApplicationService
             user.IsActive);
     }
 
+    private async Task<HashSet<Guid>> GetOnlineUserIdsAsync(IEnumerable<Guid> userIds)
+    {
+        var normalizedUserIds = userIds
+            .Where(id => id != Guid.Empty)
+            .Distinct()
+            .ToList();
+
+        if (normalizedUserIds.Count == 0)
+        {
+            return new HashSet<Guid>();
+        }
+
+        var sessions = await _identitySessionRepository.GetListAsync();
+        return sessions
+            .Where(session => normalizedUserIds.Contains(session.UserId))
+            .Select(session => session.UserId)
+            .ToHashSet();
+    }
+
     private async Task<MessengerConversation?> FindConversationByParticipantKeyAsync(string participantKey)
     {
         var query = await _conversationRepository.GetQueryableAsync();
diff --git a/api/src/Sozsoft.Platform.Application/OrgChart/OrgChartAppService.cs b/api/src/Sozsoft.Platform.Application/OrgChart/OrgChartAppService.cs
index f9f4d0d..84279cb 100644
--- a/api/src/Sozsoft.Platform.Application/OrgChart/OrgChartAppService.cs
+++ b/api/src/Sozsoft.Platform.Application/OrgChart/OrgChartAppService.cs
@@ -66,23 +66,31 @@ public class OrgChartAppService : PlatformAppService
             topPositionByDepartment[department.Id] = selectedTop;
         }
 
-        var nodes = departments.Select(d => new OrgChartNodeDto
+        var nodes = departments.Select(d =>
         {
-            Id = d.Id,
-            Name = d.Name,
-            ParentId = d.ParentId,
-            Users = users
-                .Where(u =>
-                    topPositionByDepartment.TryGetValue(d.Id, out var topPosition) &&
-                    u.GetJobPositionId() == topPosition.Id)
-                .Select(u => new OrgChartUserDto
-                {
-                    Id = u.Id,
-                    FullName = u.GetFullName(),
-                    Email = u.Email,
-                    UserName = u.UserName,
-                })
-                .ToList(),
+            topPositionByDepartment.TryGetValue(d.Id, out var topPosition);
+
+            return new OrgChartNodeDto
+            {
+                Id = d.Id,
+                Name = d.Name,
+                ParentId = d.ParentId,
+                JobPositionId = topPosition?.Id,
+                JobPositionName = topPosition?.Name,
+                Users = users
+                    .Where(u =>
+                        topPosition != null &&
+                        u.GetJobPositionId() == topPosition.Id)
+                    .Select(u => new OrgChartUserDto
+                    {
+                        Id = u.Id,
+                        FullName = u.GetFullName(),
+                        Email = u.Email,
+                        UserName = u.UserName,
+                        PhoneNumber = u.PhoneNumber
+                    })
+                    .ToList(),
+            };
         }).ToList();
 
         return nodes;
@@ -104,6 +112,8 @@ public class OrgChartAppService : PlatformAppService
             ParentId = jp.ParentId,
             DepartmentId = jp.DepartmentId,
             DepartmentName = deptDict.TryGetValue(jp.DepartmentId, out var name) ? name : null,
+            JobPositionId = jp.Id,
+            JobPositionName = jp.Name,
             Users = users
                 .Where(u => u.GetJobPositionId() == jp.Id)
                 .Select(u => new OrgChartUserDto
@@ -112,6 +122,7 @@ public class OrgChartAppService : PlatformAppService
                     FullName = u.GetFullName(),
                     Email = u.Email,
                     UserName = u.UserName,
+                    PhoneNumber = u.PhoneNumber
                 })
                 .ToList(),
         }).ToList();
diff --git a/api/src/Sozsoft.Platform.EntityFrameworkCore/Seeds/TenantData.json b/api/src/Sozsoft.Platform.EntityFrameworkCore/Seeds/TenantData.json
index 8c50fdf..3a8480e 100644
--- a/api/src/Sozsoft.Platform.EntityFrameworkCore/Seeds/TenantData.json
+++ b/api/src/Sozsoft.Platform.EntityFrameworkCore/Seeds/TenantData.json
@@ -1439,12 +1439,6 @@
             "DepartmentName": "Yönetim",
             "Name": "Genel Müdür"
         },
-        {
-            "Id": "a2b3c4d5-e6f7-4890-ab12-cd34ef56ab78",
-            "DepartmentName": "Yönetim",
-            "Name": "Genel Müdür Yardımcısı",
-            "ParentName": "Genel Müdür"
-        },
         {
             "Id": "b7c8d9e0-f1a2-4b3c-8d9e-0f1a2b3c4d5e",
             "DepartmentName": "Muhasebe",
diff --git a/ui/src/components/template/MessengerWidget.tsx b/ui/src/components/template/MessengerWidget.tsx
index 2323e61..ebc5dc7 100644
--- a/ui/src/components/template/MessengerWidget.tsx
+++ b/ui/src/components/template/MessengerWidget.tsx
@@ -31,6 +31,7 @@ import {
 import { IoCheckmarkDone, IoChatbubbleEllipsesOutline, IoSend } from 'react-icons/io5'
 
 const MAX_UPLOAD_SIZE = 10 * 1024 * 1024
+const CONTACT_REFRESH_INTERVAL = 30000
 
 const formatFileSize = (size: number) => {
   if (size < 1024 * 1024) return `${Math.max(1, Math.round(size / 1024))} KB`
@@ -99,9 +100,25 @@ const MessengerWidget = () => {
 
   useEffect(() => {
     if (!open) return
-    getMessengerContacts(filter)
-      .then((response) => setContacts(response.data))
-      .catch(() => setContacts([]))
+    let active = true
+
+    const loadContacts = () => {
+      getMessengerContacts(filter)
+        .then((response) => {
+          if (active) setContacts(response.data)
+        })
+        .catch(() => {
+          if (active) setContacts([])
+        })
+    }
+
+    loadContacts()
+    const timer = window.setInterval(loadContacts, CONTACT_REFRESH_INTERVAL)
+
+    return () => {
+      active = false
+      window.clearInterval(timer)
+    }
   }, [filter, open])
 
   useEffect(() => {
@@ -135,6 +152,9 @@ const MessengerWidget = () => {
     [contacts, selectedIds],
   )
 
+  const canSendToSelectedContacts =
+    selectedContacts.length > 0 && selectedContacts.every((contact) => contact.isOnline)
+
   const visibleMessages = useMemo(() => {
     if (selectedIds.length === 0) return []
 
@@ -146,6 +166,14 @@ const MessengerWidget = () => {
   }, [auth.user.id, messages, selectedIds])
 
   const toggleContact = (id: string) => {
+    const contact = contacts.find((item) => item.id === id)
+    if (!contact?.isOnline) {
+      toast.push(<Notification title="Offline kullanıcılara mesaj gönderilemez" type="warning" />, {
+        placement: 'top-end',
+      })
+      return
+    }
+
     setUnreadByContact((current) => {
       if (!current[id]) return current
 
@@ -210,6 +238,12 @@ const MessengerWidget = () => {
   const sendMessage = async () => {
     const trimmedText = text.trim()
     if (selectedIds.length === 0 || (!trimmedText && attachments.length === 0)) return
+    if (!canSendToSelectedContacts) {
+      toast.push(<Notification title="Sadece online kullanıcılara mesaj gönderebilirsiniz" type="warning" />, {
+        placement: 'top-end',
+      })
+      return
+    }
 
     try {
       await messengerSignalR.sendMessage({
@@ -311,16 +345,31 @@ const MessengerWidget = () => {
                       key={contact.id}
                       type="button"
                       onClick={() => toggleContact(contact.id)}
+                      disabled={!contact.isOnline}
                       className={`mb-1 flex w-full items-center gap-3 rounded-md px-2 py-2 text-left transition ${
                         active
                           ? 'bg-emerald-50 text-emerald-700 dark:bg-emerald-500/15 dark:text-emerald-100'
-                          : 'hover:bg-white dark:hover:bg-gray-800'
+                          : contact.isOnline
+                            ? 'hover:bg-white dark:hover:bg-gray-800'
+                            : 'cursor-not-allowed opacity-60'
                       }`}
                     >
                       <Avatar size={36} shape="circle" src={AVATAR_URL(contact.id, contact.tenantId || tenantId)} />
                       <span className="min-w-0 flex-1">
                         <span className="block truncate text-sm font-medium">{contact.fullName}</span>
                         <span className="block truncate text-xs text-gray-500">{contact.email || contact.userName}</span>
+                        <span
+                          className={`mt-1 inline-flex items-center gap-1 text-xs font-medium ${
+                            contact.isOnline ? 'text-emerald-600' : 'text-red-500'
+                          }`}
+                        >
+                          <span
+                            className={`h-2 w-2 rounded-full ${
+                              contact.isOnline ? 'bg-emerald-500' : 'bg-red-500'
+                            }`}
+                          />
+                          {contact.isOnline ? 'Online' : 'Offline'}
+                        </span>
                       </span>
                       {contactUnread > 0 && (
                         <span className="shrink-0 rounded-full bg-red-500 px-2 py-0.5 text-xs font-semibold text-white">
@@ -370,9 +419,13 @@ const MessengerWidget = () => {
                     </div>
                     <div className="truncate text-xs text-gray-500">
                       {selectedContacts.length === 1
-                        ? selectedContacts[0].email || selectedContacts[0].userName
+                        ? `${selectedContacts[0].isOnline ? 'Online' : 'Offline'} - ${
+                            selectedContacts[0].email || selectedContacts[0].userName
+                          }`
                         : selectedContacts.length > 1
-                          ? 'Toplu mesaj'
+                          ? canSendToSelectedContacts
+                            ? 'Toplu mesaj'
+                            : 'Offline kullanici secili'
                           : 'Mesaj göndermek için kişi seçin'}
                     </div>
                   </div>
@@ -518,6 +571,7 @@ const MessengerWidget = () => {
                         loading={uploading}
                         icon={<FaPaperclip />}
                         className="shrink-0"
+                        disabled={!canSendToSelectedContacts}
                         onClick={() => fileInputRef.current?.click()}
                       />
                     </Tooltip>
@@ -537,6 +591,7 @@ const MessengerWidget = () => {
                       placeholder="Mesaj yazın"
                       rows={1}
                       autoFocus
+                      disabled={!canSendToSelectedContacts}
                       className="min-h-[36px] flex-1 resize-none border-0 bg-transparent px-2 py-2 text-sm text-gray-900 outline-none placeholder:text-gray-400 focus:ring-0 dark:text-gray-100"
                       onChange={(event) => setText(event.target.value)}
                       onKeyDown={(event) => {
@@ -552,7 +607,7 @@ const MessengerWidget = () => {
                       variant="solid"
                       icon={<IoSend />}
                       className="shrink-0"
-                      disabled={!text.trim() && attachments.length === 0}
+                      disabled={!canSendToSelectedContacts || (!text.trim() && attachments.length === 0)}
                       onClick={sendMessage}
                     />
                   </div>
diff --git a/ui/src/services/messenger.service.ts b/ui/src/services/messenger.service.ts
index e0ce60e..87fcde4 100644
--- a/ui/src/services/messenger.service.ts
+++ b/ui/src/services/messenger.service.ts
@@ -9,6 +9,7 @@ export interface MessengerContactDto {
   fullName: string
   email?: string
   isActive: boolean
+  isOnline: boolean
 }
 
 export interface MessengerAttachmentDto {
diff --git a/ui/src/services/orgChart.service.ts b/ui/src/services/orgChart.service.ts
index 4fea9d4..0fe39d1 100644
--- a/ui/src/services/orgChart.service.ts
+++ b/ui/src/services/orgChart.service.ts
@@ -5,6 +5,7 @@ export interface OrgChartUserDto {
   fullName: string
   email: string
   userName: string
+  phoneNumber?: string
 }
 
 export interface OrgChartNodeDto {
@@ -13,6 +14,8 @@ export interface OrgChartNodeDto {
   parentId?: string
   departmentId?: string
   departmentName?: string
+  jobPositionId?: string
+  jobPositionName?: string
   users: OrgChartUserDto[]
 }
 
diff --git a/ui/src/views/admin/hr/OrgChart.tsx b/ui/src/views/admin/hr/OrgChart.tsx
index b20af0b..47c6449 100644
--- a/ui/src/views/admin/hr/OrgChart.tsx
+++ b/ui/src/views/admin/hr/OrgChart.tsx
@@ -342,12 +342,12 @@ function buildEdges(tree: TreeNode[]): EdgeLink[] {
 function UserAvatar({
   user,
   tenantId,
-  title,
+  jobPosition,
   department,
 }: {
   user: OrgChartUserDto
   tenantId?: string
-  title: string
+  jobPosition?: string
   department?: string
 }) {
   const [showUserCard, setShowUserCard] = useState(false)
@@ -381,8 +381,9 @@ function UserAvatar({
             user={{
               id: user.id,
               name: user.fullName || user.userName,
-              title,
+              title: jobPosition || '',
               email: user.email,
+              phoneNumber: user.phoneNumber,
               department,
               tenantId: tenantId ?? '',
             }}
@@ -518,16 +519,7 @@ function OrgChartNode({
           )}
         </div>
 
-        {/* Department label for job positions */}
-        {mode === 'jobPosition' && node.departmentName && (
-          <div className="px-3 pt-2">
-            <span
-              className={`inline-block text-xs px-2 py-0.5 rounded-full font-medium ${badgeBg}`}
-            >
-              {node.departmentName}
-            </span>
-          </div>
-        )}
+        
 
         {/* Users section */}
         {showUsers && (
@@ -539,7 +531,7 @@ function OrgChartNode({
                     <UserAvatar
                       user={user}
                       tenantId={tenantId}
-                      title={mode === 'jobPosition' ? node.name : node.departmentName || node.name}
+                      jobPosition={node.jobPositionName || (mode === 'jobPosition' ? node.name : undefined)}
                       department={mode === 'jobPosition' ? node.departmentName : node.name}
                     />
                     <span data-user-name="" className="text-xs text-slate-600 truncate">
diff --git a/ui/src/views/intranet/SocialWall/PostItem.tsx b/ui/src/views/intranet/SocialWall/PostItem.tsx
index b081f24..e8b1a60 100644
--- a/ui/src/views/intranet/SocialWall/PostItem.tsx
+++ b/ui/src/views/intranet/SocialWall/PostItem.tsx
@@ -386,6 +386,7 @@ const PostItem: React.FC<PostItemProps> = ({ post, onLike, onComment, onDelete,
                             id: comment.user?.id || '',
                             name: comment.user?.fullName || '',
                             title: comment.user?.jobPositions?.[0]?.name || '',
+                            phoneNumber: comment.user.phoneNumber,
                             tenantId: comment.user?.tenantId || '',
                           }}
                           position="bottom"
diff --git a/ui/src/views/intranet/SocialWall/UserProfileCard.tsx b/ui/src/views/intranet/SocialWall/UserProfileCard.tsx
index f21ab4f..b9d60c3 100644
--- a/ui/src/views/intranet/SocialWall/UserProfileCard.tsx
+++ b/ui/src/views/intranet/SocialWall/UserProfileCard.tsx
@@ -12,7 +12,6 @@ interface UserProfileCardProps {
     email?: string
     phoneNumber?: string
     department?: string
-    location?: string
     tenantId: string
   }
   position?: 'top' | 'bottom'
@@ -76,13 +75,6 @@ const UserProfileCard: React.FC<UserProfileCardProps> = ({ user, position = 'bot
             <span className="text-gray-700 dark:text-gray-300">{user.department}</span>
           </div>
         )}
-
-        {user.location && (
-          <div className="flex items-center gap-2 text-sm">
-            <FaMapMarkerAlt className="w-4 h-4 text-gray-400 flex-shrink-0" />
-            <span className="text-gray-700 dark:text-gray-300">{user.location}</span>
-          </div>
-        )}
       </div>
 
       {/* Arrow indicator */}